The main idea of the whole story is that . A. the signs for adding and subtracting have chan——青夏教育精英家教网—

摘要： The main idea of the whole story is that . A. the signs for adding and subtracting have changed. B. People could not write in the 1500s C. the old signs were good for Egyptians but not for us Key: 1.D 2.substract 3.signs 4.C 5.A 6.A Mexico's neighbours are the United States to the north and Guatemala and Belize to the south. Mexico is about one quarter of the size of the United States. Mexico has more than ninety million people. The language of Mexico is Spanish. This makes Mexico the world's largest Spanish-speaking country. Mexico City is the capital and largest city of Mexico. The city is also very high. It is 7349 feet high . This makes it one of the highest capital cities in the world. The population, of Mexico City grows bigger every day. About thirty million people live there. It has more people than any other city in the world, even more than Tokyo. Mexico also has its specialities. Many of the foods we eat started in Mexico. Foods like beans, maize, avocados, tomatoes, peanuts, chili peppers, vanilla, and chocolate come from Mexico. Mexico is also famous for its cactus plants. Mexico has more kinds of cactus than any other country. (Words: 161 Minutes: 3 )

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阅读理解。

    A Leg Walking Right
    Here are some signs + - x..., the signs are very different. They mean very different things. When you see
them, you know what to do. This sign + means that you will add some numerals. This sign-means that you
will take one numeral away from another. You will subtract (减去). What will you do when you see x and...?
    Our signs are easy to read. They are easy signs to remember. Look at these two signs….The ancient
Egyptians used these signs. A picture of a leg walking to the left told them to add some numerals. A picture
of a leg walking to the right told them to subtract.
     In the 1500s people used this printed (印刷的) sign & to add numerals. After a while the sign began to
look like this... Later, the sign became +.
     How much is 2...2?

1. What do you do when you see this sign +?

[ ]

A. Walk away
B. Write a numeral
C. Read a sign
D. Add

2. The word in the story that means to take one numeral away from another is _____.

3. The story says, "Our signs are easy to read. They are easy signs to remember".The word "they"
means _____.

4. Which of the following does this story lead to believe?

[ ]

A. Egyptians could not add numerals together
B. All Egyptians had two left legs.
C. Our signs are not hard to understand

5. What did the sign to add numerals begin to look like (which sentence is exactly like the one in your book)?

[ ]

A. After a while, the sign began to look like this...
B. After a while, the sign began to look like this +.
C. After a while, the sign began to look like this &.

6. The main idea of the whole story is that _____.

[ ]

A. the signs for adding and subtracting have changed
B. People could not write in the 1500s
C. the old signs were good for Egyptians but not for us

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阅读理解

　　A Leg Walking Right

　　Here are some signs ＋－ ×…, the signs are very different．They mean very different things．When you see them, you know what to do．This sign + means that you will add some numerals．This sign－means that you will take one numeral away from another．You will subtract(减去)．What will you do when you see x and… ?

　　Our signs are easy to read．They are easy signs to remember．Look at these two signs…．The ancient Egyptians used these signs．A picture of a leg walking to the left told them to add some numerals．A picture of a leg walking to the right told them to subtract．

　　In the 1500s people used this printed(印刷的)sign & to add numerals．After a while the sign began to look like this…．Later, the sign became ＋．

How much is 2…2?

(1)

What do you do when you see this sign ＋?
[　　]
A．	Walk away
B．	Write a numeral
C．	Read a sign
D．	Add

(2)

The word in the story that means to take one numeral away from another is ________．

(3)

The story says, “Our signs are easy to read．They are easy signs to remember”．The word they means ________．

(4)

Which of the following does this story lead to believe?
[　　]
A．	Egyptians could not add numerals together
B．	All Egyptians had two left legs．
C．	Our signs are not hard to understand

(5)

What did the sign to add numerals begin to look like(which sentence is exactly like the one in your book)?
[　　]
A．	After a while, the sign began to look like this…．
B．	After a while, the sign began to look like this ＋．
C．	After a while, the sign began to look like this &．

(6)

The main idea of the whole story is that ________．
[　　]
A．	the signs for adding and subtracting have changed．
B．	People could not write in the 1500s
C．	the old signs were good for Egyptians but not for us

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